CAMRT Radiography Practice Exam

When utilizing the Air Gap technique, the expected technical factor adjustment is an increase in exposure time. This technique involves increasing the distance between the radiation source and the image receptor, which results in a decrease in the intensity of the x-ray beam that reaches the receptor. The gap of air essentially causes some of the scattered radiation to diverge away from the image receptor, enhancing the contrast of the image by reducing the amount of scatter that contributes to it.

To compensate for the reduction in the amount of radiation reaching the image receptor due to the increased distance, the exposure time must be increased. This ensures that enough radiation reaches the receptor to produce an adequate image quality. Therefore, the adjustment in exposure time is an essential consideration when employing the Air Gap technique to maintain optimal image clarity and diagnostic quality.